1.Bg4 ! (2.Be6#)
1...Sf4 and now 2.Rd4+? Kxe5 3.Rd1# does not work because after Kxe5 the white King is in check by the black Queen. Hence:
2.Bd7 ! (3.Bd7-c6#) 2...Rg6 3.Bc6+ Rxc6 4.Re4-d4+ Kxe5 5.Rd1#
The black Rook is attracted to a square where it anticipatorily unpins the white Rook.

George Teodoru was one of the founders of the Romanian chess problem magazine "Buletin Problemistic" in 1971 with Octav Costăchel and Anatole Felix Ianovcic.
His 80th birthday was celebrated by the Romanian Chess Federation (FRS) and an interview (in Romanian) was published on the FRS website.

The paradoxical key closes the line of the white battery and offers Black 4 possibilities of captures. Each possibility is differentiated with a different battery move (3 moves by the front piece, 1 move by the rear piece).